Dimensioning with SolidWorks - Demo

Transcription

1 Dimensioning with SolidWorks - Demo Although most demos are implemented with word documents, this demo employs slides so that more details can be shown to the students as the drawing is constructed. Part 1 College of Engineering Engineering Education Innovation Center Rev: RCB Dimensioning in SolidWorks 1

2 Formal Drawings Definition: Detailed multiview representations of a finished part Formal Drawing Components: 1. Extracted Drawings Extracted Views Detailed Features Title Block 2. Dimensions Size and Type of Features Rev: , AJP Dimensioning in SolidWorks 2

3 Basic Dimensioning Engineering 1182 Dimensioning is used to define an object so that it could be manufactured and must: Define the overall size of the part in all 3 dimensions. Define the size and location of the features of the part in all 3 dimensions. Rev: , AJP Dimensioning in SolidWorks 3

4 Basic Dimensioning Engineering Overall Size Features Size and Location Rev: , AJP Dimensioning in SolidWorks 4

5 Basic Dimensioning Arcs and Circles.5.5 Overall Size 1 R1 Features Size and Location 1 R1 Ø1 Rev: , AJP Dimensioning in SolidWorks 5

6 Baseline versus Chain Dimensioning There are many ways to use dimensions to locate features. Chain Baseline (Both techniques are acceptable, however baseline dimensions are preferred.) Chain Dimensioning Baseline Dimensioning Rev: , AJP Dimensioning in SolidWorks 6

7 SolidWorks: Adding Dimensions, Center Marks and Center Lines Dimensions can be added using the Smart Dimension feature Note that sometimes the Isometric needs to be re-scaled to allow adequate drawing space which requires a NOTE. Notes can be added to reduce the number of dimensions by stating symmetry or identifying fillet radii Rev: RCB Dimensioning in SolidWorks 7

8 Opening the Drawing for Dimensioning Use My_Dimensioning_Demo_Drawing from the Extracting Drawing Demo if the drawing was completed in the previous demo or, if not completed, exit out of both Extracting_Drawing_Demo files and retrieve both Dimensioning_Demo_Part.SLDPRT and Dimensioning_Demo_Drawing.SLDDRW from the SolidWorks-8 EEIC website within the Instructors Demo Dimensioning Part 1..nstructor's Demo - Dimensioning Part 1openolidWorks-7 websiteolidwork-7 EEIC websitsolidwork-7 EEIC Rev: RCB Dimensioning in SolidWorks 8

9 Setting the Dimesioning Precision Tools / Options Since the drawing we are dimensioning is in INCHES, 2 numbers to the right of the decimal point are sufficient for this drawing. Click OK to save. Rev: RCB Dimensioning in SolidWorks 9

10 Establish the Overall Size (Height, Width & Depth) using Smart Dimension Width Usually one dimensions between center points of circles in a symmetrical object Depth Height Rev: RCB Dimensioning in SolidWorks 10

11 Size and Locate the Holes Engineering 1182 Note that the location has already been established by the Symmetry note and the hole center point separation 8 inches Rev: RCB Dimensioning in SolidWorks 11

12 Size and Locate the Other Features Note that the following Dimensioning Guidelines have been followed: 1. Dimensions are located in the "Characteristic View" 2. Positive cylinders are dimensioned where they appear as rectangles 3. Negative cylinders are dimensioned where they appear as circles 4. Dimensions are generally located between Orthographic Views 5. Object is not OVER DIMENSIONED (no more dimensions allowed!) Rev: RCB Dimensioning in SolidWorks 12

13 Dimensioning Wrap Up Rules of Dimensioning 1. Overall size in all 3 dimensions 2. Size and location of all features in all 3 dimensions Homework Assignment Problem 6.4 (qq) Model part and create 2D Drawings with all necessary formatting (dimension in next class) Rev: , AJP Dimensioning in SolidWorks 13

14 In-Class Assignment Engineering 1182 Before starting the dimensioning assignments, the instructor should open each sketch of the EXTRACTION IN-CLASS assignment and make add the constraints shown on the following slides so that each sketch is FULLY DEFINED Rev: , RCB Dimensioning in SolidWorks 14

15 Fully Define Part Engineering 1182 Add sizes Add tangencies Rev: , RCB Dimensioning in SolidWorks 15

16 OK Fully Define Part Engineering 1182 Add vertical to construction line (initially SYMMETRIC) Rev: , RCB Dimensioning in SolidWorks 16